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Maximum Allowable Pulling Tension - The
maximum tension that may be applied to a
cable or group of cables to prevent damage
due to type of grip, conductor elongation, and
sidewall pressure. This value is the lesser of
T
p
or T
c
.
Maximum Conductor Pulling Tension (T
c
) -
The maximum tension that may be applied to a
cable or group of cables to prevent damage due
to type of grip and conductor elongation.
Maximum SWP Pulling Tension (T
p
) - The
calculated pulling tension which can be used to
pull a cable or group of cables without exceed-
ing the cable sidewall pressure limits.
MC - UL type designation for metal-clad cables.
These cable designs contain continuously
welded (smooth or corrugated) or interlocked
armor utilizing aluminum or steel (NEC Article
330 & UL Standard No. 1569).
Minimum Pulling Radius - The smallest
radius to which the inside surface of the cable
may be bent under tension. This radius should
not be less than the minimum training radius.
Minimum Training Radius - The smallest
radius to which the inside surface of the cable
may be bent for permanent installation while
not under tension.
Multiconductor - More than one insulated
conductor within a single cable.
NEC - National Electrical Code.
NFPA - National Fire Protection Association.
Pull Rope - A high strength line which is
attached to the cable to allow it to be pulled.
PVC (Polyvinyl Chloride) - A thermoplastic
material composed of polymers of vinyl chloride
that is used as an insulation or jacket.
Raceway - An enclosed channel of metal or
nonmetallic materials designed expressly for
holding wires, cables, or busbars, with additional
functions as permitted in the NEC. Raceways
include, but are not limited to, rigid metal con duit,
rigid nonmetallic conduit, intermediate metal
conduit, liquid-tight flexible conduit, flexible
metallic tubing, flexible metal conduit, electrical
nonmetallic tubing, electrical metallic tubing,
underfloor raceways, cellular concrete floor
raceways, cellular metal floor raceways, surface
raceways, wireways, and busways.
Reverse Bends - Bends opposite to the direction
the cable has been wound on the cable reel.
Sheave - A wheel shaped device used in cable
pulling.
Shield - Any barrier to the passage of interfer-
ence causing electrostatic or electromagnetic
fields, formed by a conductive layer surround-
ing a cable core. It is usually fabricated from a
metallic tape, braid, foil, or wire serve.
Sidewall Pressure (SWP) - The radial force
exerted on the insulation and sheath of a cable
at a bend point when the cable is under tension.
Silicone Rubber - Various polymers in which
the main polymer chain consists of alternating
silicon and oxygen atoms in combination with
either methyl or phenyl, or both. This is a high
temperature, thermoset material primarily used
for insulation.
System FHIT 120 - UL electrical circuit pro-
tective system that is rated for 2 hour fire
resistance in horizontal and vertical straight
through with cables listed at 600 volts. With
1-Hour horizontal splices listed at 480 volts.
UL - UL, LLC.
System FHIT7 120 - ULC electrical circuit
protective system that is rated for 2 hour fire
resistance in horizontal and vertical straight
through with cables listed at 600 volts.
VITALink MC
®
- RSCC trade name for a con-
tinuously welded and corrugated metal sheath
cable with a UL 2 hour fire rating for an electri-
cal circuit protective system.
Volt - The practical unit of electromotive force.
One volt is required to send one ampere of
current through a circuit whose resistance is
one ohm.
Voltage Rating - The maximum voltage at
which a given cable or insulated conductor is
designed to operate during continuous use in a
normal manner.
Содержание VITALink MC
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